Sourcing agent for quality control in Guangzhou, China

i am looking for an sourcing agent in Guangzhou, China that will be able to source the best products, price and quality for my restaurant. Their main priority will be to find the most trusted and verified manufacturers that can be searched (alibaba, 1688) and that will provide quality products, and they can . Also, they will be in charge on pre shipment quality control and provide photos and shipments.
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